[Bug 997978] Re: KVM images lose connectivity with bridged network

[Dewey McDonnell]

My web search reveals this problem has been around for years and most
posts conclude that the problem continues.  After solving my tap0 TX
packets dropped problem, I find that my VM network has random freezes a
few times each day.  Many bloggers on this subject say this VM network
freeze is difficult to reproduce.  Not for me! I can cause a network
freeze on my VM in a heartbeat.  Like many others, all I need to do is
start a data transfer over the bridge (FTP 2Kb file or larger). When the
freeze happens, ifconfig tap0 says overruns:1. This is QEMU version
1.6.2 without KVM on CentOS 6.5 version 2.6.32-431.

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https://bugs.launchpad.net/bugs/997978

Title:
  KVM images lose connectivity with bridged network

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